Question 584363
how many rows of 1 7/8 in plus 3/8 in do you need to make a wall 7.5 feet high.
(1 7/8 + 3/8)=1 10/8= 2 2/8=2.25 inches

7.5 feet =7.5 *12 inches=90 inches
90/2.25=40 rows
You need at least forty rows of brick and mortar to reach the 7 1/2 ft doorway